Q: Is 201,991 a Prime Number?
A: No, 201,991 is not a prime number.
A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 201991 can be evenly divided by 1 73 2,767 and 201,991, with no remainder.
Since 201,991 cannot be divided by just 1 and 201,991, it is not a prime number.